Laser cutter and marker manufacturer Rofin-Sinar Technologies Inc., Plymouth, Mich., and Hamburg, Germany, added chairman and CEO duties to the responsibilities of CFO Gunther Braun. Former Chairman and CEO Peter Wirth, who suffered a stroke in January, remains executive chairman of the board. Braun has been Rofin-Sinar's CFO since 1996. He joined the company in 1989 when Rofin-Sinar acquired Coherent General Inc.'s Laser Optronics marking division. Go to rofin.com for more information.